Secure digital appliance and method for protecting digital...

Details Secure digital appliance and method for protecting digital... Secure digital appliance and method for protecting digital...

2006-06-13

2006-06-13

Peeso, Thomas R. (Department: 2132)

Electrical computers and digital processing systems: support

Data processing protection using cryptography

C713S193000, C705S057000

Reexamination Certificate

active

07062658

ABSTRACT:
A method and apparatus for protecting digital content. A secure digital appliance is disclosed for receiving communications coupled over a communication network. A private key of a private key and public key pair is stored in the secure digital appliance in such a way that the stored private key cannot be obtained by tampering with the secure digital appliance. Upon receipt of a session initiation message that is encrypted using the public key (of the private key and public key pair) the secure digital appliance decrypts the session initiation message using the stored private key to obtain a session key. The session key is then used to decrypt communications that include encrypted digital content. The secure digital appliance includes a local output device (e.g., a TV screen and/or speakers) that is operable to provide protected output of the digital content. The secure digital appliance does not contain any provision for output other than the protected output of digital content. Because the secure digital appliance does not allow for any output of the digital content other than the protected output, the end user cannot obtain a high quality digital copy of the digital content. Therefore, there is little chance that the security of digital content will be compromised.

REFERENCES:
patent: 5825879 (1998-10-01), Davis
patent: 6834110 (2004-12-01), Marconcini et al.

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